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Introduction to Linux - A Hands on Guide

This guide was created as an overview of the Linux Operating System, geared toward new users as an exploration tour and getting started guide, with exercises at the end of each chapter.
For more advanced trainees it can be a desktop reference, and a collection of the base knowledge needed to proceed with system and network administration. This book contains many real life examples derived from the author's experience as a Linux system and network administrator, trainer and consultant. They hope these examples will help you to get a better understanding of the Linux system and that you feel encouraged to try out things on your own.

This is my first time using Kubuntu for almost a month, switching from Windows. Somehow, when I install Kubuntu, it keeps being deleted by itself... when I forced to shut down the computer because of screen freeze or just shutting down normally.

This is my eighth time doing this. I don't know where all of my saved documents at the moment when Kubuntu keeps deleting by itself.

It also says that I "have 430.6 GB out of 456.7 GB (6%used)" on a 500 GB hard disk.

Where is the other 43.3 GB? I'm still not used to how Linux works overall though.

just type what your see excluding the "$" or "#" one line at a time.
If you do it incorrectly or the command is not install the system will tell you.
if you need more information on a command most commands will tell you how to use them if you type "man" and then the command. like this

Code:

$ man parted

remember not to type the "$"
The "$" just means your a normal user.
if you see a "#" your running as root.
sudo allows you to run commands as root.
using the live cd you dont know your password but they let you become root by just typing "sudo su". Then you can run commads as root(the super user).

as to the 43.3 GB i can tell you if you post the output of the commands as requested.

What i'm trying to find out is whether or not you have a linux partition on your hard drive if so you may be able to fix the system by reinstalling the boot loader grub/lilo. you may even be able to access your files from the live cd.

just type what your see excluding the "$" or "#" one line at a time.
If you do it incorrectly or the command is not install the system will tell you.
if you need more information on a command most commands will tell you how to use them if you type "man" and then the command. like this

Code:

$ man parted

remember not to type the "$"
The "$" just means your a normal user.
if you see a "#" your running as root.
sudo allows you to run commands as root.
using the live cd you dont know your password but they let you become root by just typing "sudo su". Then you can run commads as root(the super user).

as to the 43.3 GB i can tell you if you post the output of the commands as requested.

I typed "sudo su" instead and it worked. I followed the rest of your terminal guide and got:

I found out that there was a problem with my power supply. I had a very outdated power supply that made a lot of mess. I switched the an updated power supply and my Kubuntu is running very fine than before.